334 



CLASSIFICATION OF FISHES^ ETC. 



OpMsoma Sw. (^fig. 111. a.) Resembling the last^ but 

 the transverse spiracles are placed in front of the base 

 of the pectorals ; nostrils not tubular, 

 obtusa Sw, Appendix. acuta Sw. App. 



Ophisurus Lac. General structure of Anguilla ; but 

 the dorsal and anal fins terminate at the extreme tip 

 of the tail, which is naked and pointed. 



O. pictus. Sw. App. immaculata. Gray, Ind. Zool. 



puncticulata. Ham. i. pi. 91. fig. 1. 



fig. 5. acuminata. lb. 91. fig. 2. 



Leptogriathus Sw. Jaws greatly prolonged, attenuated, 

 and pointed ; the sides armed with large, scattered, 

 acute teeth, pointing backwards, with others, much 

 smaller, interspersed ; nostrils simple ; gape very 

 wide ; spiracle placed transversely in front of the 

 pectoral; dorsal and anal widening at their extre- 

 mities, and terminating before the end of the tail, 

 which is naked and obtuse. 



L. oxyrhynchus Sv. app. (Vol.1, p. 221. ^^. 42.) 



PterurusS'w. (fig. 111. b.) ]Mouth small ; dorsal and 

 anal fin rather short, placed near the caudal fin and 

 the vent, which is very remote from the head ; caudal 

 fin distinct, and encircling the end of the tail, which 

 is obtuse. 



P. maculatus. Ham. p. 25. * triporosa. Russ. i. No. 34. 



Hardwickii. Grav, Ind. Zool. 



• Mursena raitaborr a of Hamilton. 



